Converter oxygen lance anti-falling trolley

Abstract

The invention relates to a converter oxygen lance anti-falling trolley and belongs to the technical field of converter steelmaking equipment, the converter oxygen lance anti-falling trolley comprises an oxygen lance trolley and a transverse moving trolley, the oxygen lance trolley is located below the transverse moving trolley, an anti-falling device is arranged on the oxygen lance trolley, guide rails are arranged on the two sides of the oxygen lance trolley respectively, and a plurality of anti-falling brake blocks are evenly arranged on the sides, close to the oxygen lance trolley, of the guide rails. According to the anti-falling device, the limitation that a traditional anti-falling device only plays a role when a steel wire rope is broken is broken through, under the condition that the steel wire rope or a connecting shaft is not broken, by means of a unique speed limiting induction and mechanical linkage anti-falling mechanism, the anti-falling device can be used for preventing the steel wire rope or the connecting shaft from being broken, and the anti-falling device can be used for preventing the steel wire rope or the connecting shaft from being broken. And the reliability of the anti-falling process is greatly improved, the equipment safety in the steelmaking production process can be effectively guaranteed, the economic loss is reduced, and the life safety of workers can be practically guaranteed.

Description

Technical Field

[0001] The invention relates to an anti-falling trolley, in particular to an anti-falling trolley for a converter oxygen lance, and belongs to the technical field of converter steelmaking equipment. Background Art

[0002] In steel production, the double winch oxygen blowing device of the top-blown converter uses a drum and a wire rope to drag the oxygen lance lifting trolley to blow oxygen into the converter. However, during the smelting process, due to various reasons such as equipment aging and operating errors, lance drop accidents often occur, which not only causes unnecessary economic losses, but also may endanger the lives of workers.

[0003] In the prior art, the Chinese invention patent with patent application number CN201710455784.0 discloses an oxygen lance anti-fall device, which prevents falling when the wire rope breaks by setting guide rods, slides, return springs, and anti-fall blocks on the oxygen lance lifting trolley. There is also a Chinese invention patent with patent application number CN202011569617.7, which discloses a converter oxygen lance anti-fall trolley, which uses the main spring seat, anti-fall pressure block, anti-fall brake rod and other components to prevent falling after the wire rope or connecting shaft breaks. However, these devices mainly rely on the anti-fall mechanism after the wire rope breaks. However, in the actual production process, the falling accidents of the oxygen lance lifting trolley are not all caused by the breakage of the wire rope, so the anti-fall reliability of these devices is limited. Summary of the invention

[0004] In view of the deficiencies in the background technology, the present invention provides a converter oxygen lance anti-fall trolley, which aims to achieve the following objectives: when the wire rope or the connecting shaft is not broken, when the lifting speed of the oxygen lance trolley exceeds the rated speed by 10%~30%, the anti-fall function can be accurately and reliably realized, effectively ensuring the equipment safety and the life safety of the workers in the steelmaking production process.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A converter oxygen lance anti-fall trolley comprises an oxygen lance trolley and a transverse trolley. The oxygen lance trolley is located below the transverse trolley. An anti-fall device is provided on the oxygen lance trolley. Guide rails are provided on both sides of the oxygen lance trolley. A plurality of anti-fall brake blocks are evenly provided on the side of the guide rail close to the oxygen lance trolley. Speed ​​limiters are provided on both sides above the transverse trolley. A counterweight block guide rail is provided below the speed limiter.

[0006] As a further improvement of the above technical solution: The anti-falling device comprises anti-falling device frames respectively arranged on both sides of the upper part of the oxygen lance trolley, and the two anti-falling device frames are symmetrically arranged.

[0007] Anti-fall brake rods are respectively hinged inside the two anti-fall device frames.

[0008] The upper outer sides of the two anti-falling device frames are respectively plugged with latches, which are inserted into the anti-falling device frames.

[0009] One end of the anti-falling brake rod is located below the latch, and the latch presses down one end of the anti-falling brake rod.

[0010] The other end of the anti-fall brake rod is connected to one end of a traction spring.

[0011] The other end of the traction spring is fixedly connected to the oxygen gun trolley.

[0012] The upper end of the latch is fixedly connected with a steel wire rope.

[0013] The steel wire rope is fixedly connected with the counterweight block via the speed limiter and the counterweight block guide rail in sequence.

[0014] A pin is provided between the anti-falling brake rod and the anti-falling device frame, and the anti-falling brake rod and the anti-falling device frame are hinged through the pin.

[0015] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention breaks through the limitation that traditional anti-fall devices only work when the wire rope breaks. When the wire rope or the connecting shaft is not broken, the reliability of the anti-fall process is greatly improved by virtue of the unique speed limit sensing and mechanical linkage anti-fall mechanism. It can not only effectively ensure the safety of equipment in the steelmaking production process and reduce economic losses, but also effectively protect the lives of workers.

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a structural schematic diagram of a converter oxygen lance anti-falling trolley in an embodiment of the present invention; Attached Figure 2 It is a structural schematic diagram of an anti-falling device of a converter oxygen lance anti-falling trolley in an embodiment of the present invention; Attached Figure 3 Yes Figure 2 Rear view of Attached Figure 4 The invention is a schematic structural diagram of an anti-falling brake rod of a converter oxygen lance anti-falling trolley when the anti-falling brake rod is opened in an embodiment of the present invention.

[0018] In the figure, 1-speed limiter, 2-wire rope, 3-latch pin, 4-pin shaft, 5-traction spring, 6-counterweight guide rail, 7-oxygen gun trolley, 8-counterweight, 9-transverse trolley, 10-anti-fall device frame, 11-anti-fall brake rod, 12-anti-fall brake block, 13-guide rail. DETAILED DESCRIPTION

[0019] Embodiment: As shown in the appendix Figure 1-4 shown, a converter oxygen lance anti-falling trolley includes an oxygen lance trolley 7 and a transverse trolley 9. The oxygen lance trolley 7 is located below the transverse trolley 9. An anti-falling device is provided on the oxygen lance trolley 7. Guide rails 13 are respectively provided on both sides of the oxygen lance trolley 7. A number of anti-falling brake blocks 12 are evenly provided on the side of the guide rail 13 close to the oxygen lance trolley 7. Speed limiters 1 are respectively provided on both sides above the transverse trolley 9. A counterweight guide rail 6 is provided below the speed limiter 1.

[0020] The anti-falling device includes anti-falling device frames 10 respectively provided on both sides of the upper part of the oxygen lance trolley 7. The two anti-falling device frames 10 are symmetrically arranged. Anti-falling brake rods 11 are respectively hinged inside the two anti-falling device frames 10. A pin shaft 4 is provided between the anti-falling brake rod 11 and the anti-falling device frame 10 and is hinged through the pin shaft 4. Plug pins 3 are respectively inserted into the outer sides above the two anti-falling device frames 10. The plug pin 3 is inserted into the anti-falling device frame 10. One end of the anti-falling brake rod 11 is located below the plug pin 3. The plug pin 3 presses down one end of the anti-falling brake rod 11. The other end of the anti-falling brake rod 11 is connected to one end of a traction spring 5. The other end of the traction spring 5 is fixedly connected to the oxygen lance trolley 7. When the plug pin 3 presses down the anti-falling brake rod 11, the traction spring 5 is stretched and stores elastic potential energy. When the plug pin 3 is lifted, the traction spring 5 releases the elastic potential energy and contracts, driving one end of the anti-falling brake rod 11 to lift and the other end to press down. The anti-falling brake rod 11 is transformed into an open state and cooperates with the anti-falling brake block 12 to achieve the anti-falling function.

[0021] The upper end of the plug pin 3 is fixedly connected to a steel wire rope 2. The steel wire rope 2 is fixedly connected to a counterweight 8 through the speed limiter 1 and the counterweight guide rail 6 in sequence. When the oxygen lance trolley 7 moves up and down normally, the counterweight 8 is pulled by the steel wire 2 to move smoothly up and down in the counterweight guide rail 6, effectively avoiding the collision problem caused by shaking and ensuring the stability of the entire speed sensing system.

[0022] When the oxygen lance trolley 7 falls or the rising speed gradually increases, the rotation speed of the rope pulley inside the speed limiter 1 driven by the steel wire rope 2 also increases accordingly. When the speed of the oxygen lance trolley 7 reaches 110% - 130% of the preset rated speed value of the speed limiter 1, the speed limiter 1 brakes the steel wire rope 2, so that the plug pin 3 is pulled out of the anti-falling device frame 10. When the plug pin 3 is pulled out, the traction spring 5 instantaneously changes from the state of stretching and storing elastic potential energy to the state of contracting and releasing elastic potential energy, instantaneously opening the anti-falling brake rod 11, and cooperating with the anti-falling brake block 12 to brake the oxygen lance trolley 7 to a stop.

[0023] During normal operation, the steel wire rope 2 is connected to the plug pin 3 and the steel wire rope 2 is in a nearly taut state. To prevent the plug pin 3 from being pulled out during normal movement, a baffle with a certain resistance is provided on the anti-falling device frame 10.

[0024] The present invention breaks through the limitation that traditional anti-fall devices only work when the wire rope breaks. When the wire rope or the connecting shaft is not broken, the reliability of the anti-fall process is greatly improved by virtue of the unique speed limit sensing and mechanical linkage anti-fall mechanism. It can not only effectively ensure the safety of equipment in the steelmaking production process and reduce economic losses, but also effectively protect the lives of workers.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The examples of the implementation methods and the parts not described in detail are common knowledge of ordinary technicians in the field. For those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A converter oxygen lance anti-falling trolley, characterized in that: The invention comprises an oxygen lance trolley (7) and a transverse trolley (9), wherein the oxygen lance trolley (7) is located below the transverse trolley (9), an anti-falling device is provided on the oxygen lance trolley (7), guide rails (13) are provided on both sides of the oxygen lance trolley (7), a plurality of anti-falling brake blocks (12) are evenly provided on the side of the guide rail (13) close to the oxygen lance trolley (7), speed limiters (1) are provided on both sides above the transverse trolley (9), and a counterweight guide rail (6) is provided below the speed limiter (1).

2. A converter oxygen lance anti-falling trolley according to claim 1, characterized in that: The anti-falling device comprises anti-falling device frames (10) respectively arranged on both sides of the upper part of the oxygen lance trolley (7), and the two anti-falling device frames (10) are symmetrically arranged.

3. A converter oxygen lance anti-falling trolley according to claim 2, characterized in that: An anti-falling brake rod (11) is hingedly connected inside each of the two anti-falling device frames (10).

4. A converter oxygen lance anti-falling trolley according to claim 3, characterized in that: The upper outer sides of the two anti-falling device frames (10) are respectively plugged with latches (3), and the latches (3) are inserted into the anti-falling device frames (10).

5. The converter oxygen lance anti-falling trolley according to claim 4, characterized in that: One end of the anti-falling brake rod (11) is located below the latch pin (3), and the latch pin (3) presses one end of the anti-falling brake rod (11) downward.

6. A converter oxygen lance anti-falling trolley according to claim 5, characterized in that: The other end of the anti-fall brake rod (11) is connected to one end of a traction spring (5).

7. The converter oxygen lance anti-falling trolley according to claim 6, characterized in that: The other end of the traction spring (5) is fixedly connected to the oxygen lance trolley (7).

8. The converter oxygen lance anti-falling trolley according to claim 4, characterized in that: The upper end of the latch pin (3) is fixedly connected to a steel wire rope (2).

9. The converter oxygen lance anti-falling trolley according to claim 8, characterized in that: The steel wire rope (2) is fixedly connected to a counterweight (8) via a speed limiter (1) and a counterweight guide rail (6) in sequence.

10. The converter oxygen lance anti-falling trolley according to claim 3, characterized in that: A pin shaft (4) is provided between the anti-falling brake rod (11) and the anti-falling device frame (10), and the two are hingedly connected via the pin shaft (4).

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